Describe two advantages and two disadvantages of a market system.

The two advantages of a market system are a wider variety of goods and the competition makes businesses more efficient. This makes the market system effective but there are also disadvantages that come with this which are that the market system production can lead to negative externalities according to the website frndzzz. Another disadvantage of a market system is that there could be certain products that are not available to the people.

answer; taking up arms to defend the nation;

incident infrared radiation is blocked. visible and ultraviolet radiation heat   earth.

earth radiates infrared radiation. infrared radiation is blocked and heats earth. visible and shortwave radiation heat earth.

earth radiates longwave radiation

longwave radiation is reflected downward longwave radiation heats earth